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如何为输入添加前缀和后缀,例如我有这个输入
<input type="text" class="form-control btn btn-default" name="userinput" size="100" autocomplete="off" placeholder="enter word here">
当用户输入时Hello,我想像这样将其发送到数据库"Hello"
Hello
"Hello"
这是我必须从数据库还是从 html 获得的东西?